Bobbin.



No. 733,557. PATENTED JULY 14,1903. A. A. SACK.

BOBBIN.

APPLICATION FILED APR. 23, 1903.

NO MODEL.

d .1 FIG. I 6? FIG";

i l-rA/Eh -issa. /NL E'A/7'DR,

W UMnA/YUB, VAm/mm m: mum Pains 0o smorouwm wnsnmcmw u c UNITED STATES Patented July 14, 190a PATENT FFICE.

BOBBIN.

SPECIFICATION forming part of Letters Patent No. 733,557, dated July 14, 1903.

Application filed April 23, 1903. Serial No. 153,912. (No model.)

To aZZ whom it may concern:

Beit known that 1, AUGUST ALBERT SACK, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Bobbins, of which the following is a specification.

My invention relates to bobbins intended for use upon spinning-spindles, and has for its purpose the ends commonly sought in such devices.

It has been found that the wear and abrasion upon the face of the bobbin-base caused by the metallic portions of the supportingspindle has been so excessive as to ruin the bobbin after atemporary use. This particular defect, among others, is entirely obviated by my improved structure.

To the above ends my invention consists of the novel parts and combinations hereinafter described and illustrated in the accompanying drawings, wherein Figure 1 is a side elevation of my new bobbin engaged upon a spindle; Fig. 2, a vertical section of the same upon the line X X of Fig. 1; Fig. 3, a plan view of the base-plate; Fig. 4, a transverse section of the same on line Y Y of Fig. 3, and Fig. 5 a top plan view of the spindle with the bobbin removed.

Like letters of reference indicate like parts throughout the views.

In detail my bobbin consists of a wooden body portion a and circumferentiallyenlarged base I), the whole traversed by a longitudinal passage 0 to admit the blade (1 of the spindle. The face of the bobbin-base is excoriated into a plurality of radial channels e, rectangular in cross-section. The depth of these channels is uniform, except that near their ends they are beveled, f, until they reach the plane of the face of the base, where the channels terminate near the base periphery.

A plate A, ofsteel or other hard metal, is formed with channels 6, having beveled terminals f, corresponding in outline with the channels in the bobbin above described, and a central opening 0'. Aplurality of perforations therein, m, near its margin afiord passage therethrough of screws n, provided with rearwardly-tapering heads by means of which the plate is held in engagement with the bobbin with which the plate registers. The perforations are preferably suffieiently beveled to allow the head of the inserted screws to set flush with the surface of the plate.

Upon the portion 0 of the spindle above the whirl 0" rise two rectangular projections s in diametrical alinement with each other on either side of the spindle-blade. These register in the channel e of the plate, and thereby engage the bobbin.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a bobbin, the combination with a base of a plate provided with a plurality of radial channels having beveled terminals and means for attaching the plate to the base.

2. A bobbin of the class described, comprising a metallic base and inclined radial channels in the base, as and for the purpose set forth.

In testimony whereof I have affixed mysignature in presence of two witnesses.

AUGUST ALBERT SACK.

Witnesses:

HORATIO E. BELLows, WILLIAM E. BROWN. 

